She also sent her letter to Prime Minister Theresa May, MP Matthew Hancock, the Lord Speaker and leader of the House of Commons telling them: “The justice system in our country has completely and utterly let us down.”

Speaking to the News about Simon’s recovery more than 18 months after the attack, Nicole said: “We did the oxygen therapy for Simon, but for some reason, whether it was the long drive and the fact that the therapy lasted an hour and 20 minutes at a time, Simon’s mood completely changed.

“As a result of that, we stopped taking him and his mood has improved so much more just being at home. We decided not to go back because it was clear that it was distressing him.

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She said: “Part of him recognises that closure thanks to the court case and whether it's because he’s now at home, Simon certainly seems a lot more settled now.

“Simon understands that all that [the court trial] is over now, but if anyone else can help in terms of identifying exactly who carried out the attack in March 2015, please do get in touch with the police.

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